2) Is there generally any attempt at tracking gr
master, or do you typically only target release branches?
Historically, we only target release branch.
"Master" only gets supported when the first "rc" comes out and the GR
API is declared stable.
Once the new stable release come it becomes the only supported one and
what gr-osmosdr 'master' targets. The "old" release becomes a branch
and pretty much frozen.
Now Hoerchen who's taking over gr-osmosdr may decide to change that
scheme ... up to him.
Cheers,
Sylvain